GCD of 628, 356, 561, 639 Calculator

Given Input numbers are 628, 356, 561, 639

In the factoring method, we have to find the divisors of all numbers

Divisors of 628 :

The positive integer divisors of 628 that completely divides 628 are.

1, 2, 4, 157, 314, 628

Divisors of 356 :

The positive integer divisors of 356 that completely divides 356 are.

1, 2, 4, 89, 178, 356

Divisors of 561 :

The positive integer divisors of 561 that completely divides 561 are.

1, 3, 11, 17, 33, 51, 187, 561

Divisors of 639 :

The positive integer divisors of 639 that completely divides 639 are.

1, 3, 9, 71, 213, 639

GCD of numbers is the greatest common divisor

So, the GCD (628, 356, 561, 639) = 1.

Given numbers are 628, 356, 561, 639

The list of prime factors of all numbers are

Prime factors of 628 are 2 x 2 x 157

Prime factors of 356 are 2 x 2 x 89

Prime factors of 561 are 3 x 11 x 17

Prime factors of 639 are 3 x 3 x 71

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 628, 356, 561, 639

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(628, 356) = 55892

GCD(628, 356) = ( 628 x 356 ) / 55892

= 628 / 356

= 628

Step2:

LCM(4, 561) = 2244

GCD(4, 561) = ( 4 x 561 ) / 2244

= 4 / 561

= 4

Step3:

LCM(1, 639) = 639

GCD(1, 639) = ( 1 x 639 ) / 639

= 1 / 639

= 1

So, Greatest Common Divisor of 628, 356, 561, 639 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 399, 620, 869, 189
• GCD of 492, 700, 991, 490
• GCD of 549, 905, 586, 960
• GCD of 283, 828, 457, 196
• GCD of 110, 266, 594, 941

Given numbers are 628, 356, 561, 639
The greatest common divisor of numbers 628, 356, 561, 639 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 628, 356, 561, 639 is 1.

1. What is the GCD of 628, 356, 561, 639?

GCD of given numbers 628, 356, 561, 639 is 1

2. How to calculate the greatest common divisor of 628, 356, 561, 639?

We can find the highest common divisor of 628, 356, 561, 639 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 628, 356, 561, 639 i.e 1.

3. How can I use the GCD of 628, 356, 561, 639Calculator?

Out the numbers 628, 356, 561, 639 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.